as Q, math.random()?

[Dqws]

i have understood how math.random() works,but one Question remain still,
How can i math.random() an integer?
i mean so it will be not a 2.242134 but only 2.0 or 3.0?

[CaiWengi]

Math.round(Math.random()*5)

[Dqws]

At 8/1/08 07:01 AM, CaiWengi wrote: Math.round(Math.random()*5)

Great Thx.

[Rustygames]

Math.random() will never return more than 1.

You can make either 2 or 3 by doing:

trace(2+(Math.round(Math.random())));

Or you could make it do any range with this function:

function randomInt(min:Number, max:Number):Number {
	return min+Math.round(Math.random()*(max-min));
}
trace(randomInt(4, 8));

This returns 4, 5, 6, 7 or 8

[Vengeance]

It would be a stupid idea to use Math.round() with it, simply because the last 2 digits have half the chance of appearing as the ones in the middle.
For example:
Math.round(Math.random()*5);
Will return 0 when between 0 and 0.5;
Will return 1 when between 0.5 and 1.5;
Will return 2 when between 1.5 and 2.5;
Will return 3 when between 2.5 and 3.5;
Will return 4 when between 3.5 and 4.5;
Will return 5 when between 4.5 and 5;

So what you should be doing is:
Math.floor(Math.random()*6)+1 = between 0-5
or
Math.ceil(Math.random()*6)-1 = between 0-5

[Rustygames]

I ran mine 100 times and they came up equal. I didn't work it out at all but I'm pretty sure it works fairly.

Was that aimed at me or the other fellow?

Cheers :)

[Rustygames]

Yikes sorry re-read. You're completely right. My test was inconclusive. Be a dear and rewrite the function to work evenly :)